161534356 has 6 divisors (see below), whose sum is σ = 282685130. Its totient is φ = 80767176.

The previous prime is 161534339. The next prime is 161534363. The reversal of 161534356 is 653435161.

It can be written as a sum of positive squares in only one way, i.e., 156650256 + 4884100 = 12516^2 + 2210^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20191791 + ... + 20191798.

Almost surely, 2^161534356 is an apocalyptic number.

It is an amenable number.

161534356 is a deficient number, since it is larger than the sum of its proper divisors (121150774).

161534356 is a wasteful number, since it uses less digits than its factorization.

161534356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40383593 (or 40383591 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 161534356 is about 12709.6166739993. The cubic root of 161534356 is about 544.6133733499.

The spelling of 161534356 in words is "one hundred sixty-one million, five hundred thirty-four thousand, three hundred fifty-six".